netdev.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Li Zhijian <lizhijian@fujitsu.com>
To: linux-kernel@vger.kernel.org
Cc: Li Zhijian <lizhijian@fujitsu.com>,
	Chas Williams <3chas3@gmail.com>,
	linux-atm-general@lists.sourceforge.net, netdev@vger.kernel.org
Subject: [PATCH] atm: Convert sprintf/snprintf to sysfs_emit
Date: Thu, 14 Mar 2024 16:44:17 +0800	[thread overview]
Message-ID: <20240314084417.1321811-1-lizhijian@fujitsu.com> (raw)

Per filesystems/sysfs.rst, show() should only use sysfs_emit()
or sysfs_emit_at() when formatting the value to be returned to user space.

coccinelle complains that there are still a couple of functions that use
snprintf(). Convert them to sysfs_emit().

sprintf() will be converted as weel if they have.

Generally, this patch is generated by
make coccicheck M=<path/to/file> MODE=patch \
COCCI=scripts/coccinelle/api/device_attr_show.cocci

No functional change intended

CC: Chas Williams <3chas3@gmail.com>
CC: linux-atm-general@lists.sourceforge.net
CC: netdev@vger.kernel.org
Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
---
This is a part of the work "Fix coccicheck device_attr_show warnings"[1]
Split them per subsystem so that the maintainer can review it easily
[1] https://lore.kernel.org/lkml/20240116041129.3937800-1-lizhijian@fujitsu.com/
---
 drivers/atm/solos-pci.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c
index d3c30a28c410..369a7f414f05 100644
--- a/drivers/atm/solos-pci.c
+++ b/drivers/atm/solos-pci.c
@@ -198,8 +198,8 @@ static ssize_t solos_param_show(struct device *dev, struct device_attribute *att
 
 	header = skb_put(skb, sizeof(*header));
 
-	buflen = snprintf((void *)&header[1], buflen - 1,
-			  "L%05d\n%s\n", current->pid, attr->attr.name);
+	buflen = sysfs_emit((void *)&header[1], "L%05d\n%s\n", current->pid,
+			    attr->attr.name);
 	skb_put(skb, buflen);
 
 	header->size = cpu_to_le16(buflen);
@@ -453,7 +453,7 @@ static ssize_t console_show(struct device *dev, struct device_attribute *attr,
 	skb = skb_dequeue(&card->cli_queue[SOLOS_CHAN(atmdev)]);
 	spin_unlock_bh(&card->cli_queue_lock);
 	if(skb == NULL)
-		return sprintf(buf, "No data.\n");
+		return sysfs_emit(buf, "No data.\n");
 
 	len = skb->len;
 	memcpy(buf, skb->data, len);
@@ -548,7 +548,7 @@ static ssize_t geos_gpio_show(struct device *dev, struct device_attribute *attr,
 	data32 = ioread32(card->config_regs + GPIO_STATUS);
 	data32 = (data32 >> gattr->offset) & 1;
 
-	return sprintf(buf, "%d\n", data32);
+	return sysfs_emit(buf, "%d\n", data32);
 }
 
 static ssize_t hardware_show(struct device *dev, struct device_attribute *attr,
@@ -569,7 +569,7 @@ static ssize_t hardware_show(struct device *dev, struct device_attribute *attr,
 		data32 = (data32 >> 5) & 0x0F;
 		break;
 	}
-	return sprintf(buf, "%d\n", data32);
+	return sysfs_emit(buf, "%d\n", data32);
 }
 
 static DEVICE_ATTR_RW(console);
-- 
2.29.2


             reply	other threads:[~2024-03-14  8:45 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-03-14  8:44 Li Zhijian [this message]
2024-03-14  9:54 ` [PATCH] atm: Convert sprintf/snprintf to sysfs_emit Denis Kirjanov

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20240314084417.1321811-1-lizhijian@fujitsu.com \
    --to=lizhijian@fujitsu.com \
    --cc=3chas3@gmail.com \
    --cc=linux-atm-general@lists.sourceforge.net \
    --cc=linux-kernel@vger.kernel.org \
    --cc=netdev@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).